function I = drawBoundingBox(img,abox,color)
%%
% Input:
% img : h*w
% abox 1*4 ;  [xmin,ymin,xmax,ymax] 
% color 1*3
%%
for c = 1:3
    img(abox(2),abox(1):abox(3),c) = color(c);
    img(abox(4),abox(1):abox(3),c) = color(c);
    img(abox(2):abox(4),abox(1),c) = color(c);
    img(abox(2):abox(4),abox(3),c) = color(c);
end
I = img;
end